United States vs Missouri

United States and Missouri both are nouns.

Word	Noun	Adjective	Verb	Adverb
United States	Yes	No	No	No
Missouri	Yes	No	No	No

United States (noun)	Missouri (noun)
the executive and legislative and judicial branches of the federal government of the United States	a dialect of the Chiwere language spoken by the Missouri
North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776	a midwestern state in central United States; a border state during the American Civil War, Missouri was admitted to the Confederacy without actually seceding from the Union
	the longest river in the United States; arises in Montana and flows southeastward to become a tributary of the Mississippi at Saint Louis
	a member of the Siouan people formerly inhabiting the valley of the Missouri river in Missouri